<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="js/vue.js"></script>
</head>
<body>
    <div id="app">
        <input type="text" @keydown.enter="submitMsg1">{{ msg1 }}
        <input type="text" @keydown.enter.ctrl="submitMsg2">{{ msg2 }}
    </div>
    <script>
        let app = new Vue({
            el:"#app",
            data: {
                msg1 : "",
                msg2 : ""
            },
            methods: {
                submitMsg1(event){
                    this.msg1 = event.target.value;
                },
                submitMsg2(event){
                    this.msg2 = event.target.value;               
                }

            }
        })
    </script>
</body>
</html>